Laser Engraving:
Laser engraving is one of the industrial marking solutions, that
means that while creating the mark, the material is vaporized or removed during
the process. One of the examples in this business is the CO2 laser engraving
plastic for the purpose of signage which is usually a two ply plastic with mono
color named as the ‘cap’ laminated to a divergent color called ‘core’.The
process retrieves the cap and then exposes the core to make a sign which is
attractive. Engraving is also involved in the metal processing. The material is
removed to ensure depth, typically to guarantee permanence. Mostly, the process is reserved for 1064 nano meter wavelength lasers. Rusting or oxidation can occur while engraving metals in this way because the laser breaks the machined surface.
Laser Marking:
Precipitation or annealing marking is
usually used while processing metals where the surface must stay intact. Mostly,
items like high precision bearings, surgical instruments, or surgical implants
require laser marking with laser marking machine.With this type of marking, the laser heat is redistributed along
the carbon in the material in order to create a black mark utilizing mere
micron level surface disruption. Even under autoclaving or salt sprays, there
will be no signs of rusting or oxidation if the process is carried away
properly. If the same material is processed with a CO2 laser, then an engraved
mark will be resulted with no contrast. This all depends on the wavelength and
how the material reacts or the pigment of the material.
Laser Cutting:
Laser cutting is sometimes confused
with laser engraving but it means total sectioning of a piece or to cut shapes
directly through the material. Mostly, laser cutting is performed using CO2
lasers, but again, the interaction is made with the material rather than the
pigment in the material. A lot of work is done with acrylics that can be used
for retail displays, signage or other applications. At the time of cutting,
measures should be taken for smooth cuts, which is called flame polished edges.
There comes a time when high powered YAGs are used to cut metal, but also with
these materials, CO2 seems to be the best option especially high powered. Water
jetting is another technology which is great with stone and metals. Cutting,
however, does not always means thick materials. Some of the other common
applications include gasket cutting, leather sectioning and paper cutting.
In short, the understanding of basic
terminology is necessary while you shop for a laser. It will get you far in the
communication with the vendor and this will give a better chance to him to
understand your specific needs.
For more details visit our website: http://www.heatsign.com/
